The standard and anomalous crystal-field spectra of Eu3+

被引：239

作者：

Chen, XY ^{[1
]}

Liu, GK ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2005年 / 178卷 / 02期

关键词：

crystal-field spectra; Eu3+; charge-transfer states; energy levels; Wybourne-Downer mechanism;

D O I：

10.1016/j.jssc.2004.09.002

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The crystal-field (CF) spectra of Eu3+ in various inorganic crystalline phases are summarized based on previous investigations. A majority of experimental results can be well interpreted using a standard CF model. However, there are cases in which the spectroscopic properties and fluorescence dynamics of Eu3+ cannot be interpreted within the framework of the standard model. A particularly interesting system is Eu3+ doped into microcrystals of a charge-unbalanced host such as BaFCl. For Eu3+ :BaFCl, one Eu3+ site (Site 1) exhibits normal CF splitting and its energy levels and fluorescence intensity are similar to most other normal systems ever reported. A standard CF fitting has been performed for Site I. However, Eu3+ at a distorted site (Site II) is of anomalous fluorescence dynamics and CF splitting which are significantly different from those of Site I. In the metastable state of D-5(0), Eu3+ ions at Site II also exhibit unusual temperature-dependent lifetime. (c) 2004 Elsevier Inc. All rights reserved.

引用

页码：419 / 428

页数：10

共 83 条

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